@DensyoV wrote: Hi,   Try disabling your Windows firewall and see if that works. Also, check if you have any layer 3 firewall rules configured on the Wireless > Firewall and traffic shaping page.   Thanks,  This is very good advice. Windows firewall likes to block external pings.   You can test for Windows FW issues by confirming the AP is pingable by another device on the same SSID. Then try to ping the AP from the problem child device. If problem child can ping AP, but AP can't ping problem child, it's usually software firewall. ... View more